Patent Yard Sign in
Expired Canadian patentCanada

Automatic test tube plug extraction apparatus

CA 1288933 C · Owner: Itoh, Teruaki · Inventors: Itoh, Teruaki

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A rack, with a plurality of test tubes arranged on it, in m columns and n rows, is transported into a main housing by a rack-inlet mechanism. In the main housing, tube-extracting mechanism extracts the tubes from rack, row by row, while the rack is being transported by a rack-transporting mechanism. The tubes are then conveyed, one by one, by a tube-conveying mechanism. A plug-extracting mechanism pulls each test tube conveyed by the mechanism and the plug closing this tube, away from each other while holding, the tube and the plug, thereby extracting the plug from the test tube. The test tubes are further conveyed by the tube-conveying mechanism after the plugs have been extracted from …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted September 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 23, 1987
GrantedSeptember 17, 1991
Term endedSeptember 17, 2008
Patent numberCA 1288933 C
Classification (IPC)G01N35/02 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 23, 1987Patent grantedSep 17, 1991Term endedSep 17, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.